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Home >> Pontiac >> 1986 >> Firebird Trans Am, 5.0 F >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - PFI >> Diagnostic Testing >> Trouble Code Definitions >> Code 33
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Code 33

MAF sensor signal voltage too high on 2.8L, 5.0L, and 5.7L engines. MAP sensor sensor signal voltage high on 1.8L and 3.0L engines.

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